Wonder Woman Fights The Joker in New ‘Justice League Action’ Trailer

Now that we know Cartoon Network’s zany Justice League Action is bound for a December premiere, new trailers are suiting up all over the place. Case in point, a new international trailer introduces a few heroes we haven’t heard from yet, as Batman, Wonder Woman and Superman take on some of the DC universe’s biggest villains.

Justice League Action debuted a brand-new trailer for the upcoming premiere, spotlighting not only Mark Hamill’s return as the Joker, but also new team members like Flash and Zatanna. The series will premiere with four-part special “Shazam Slam” on Friday, December 16 at 6:00 P.M., with new episodes debuting Saturday mornings on Cartoon Network, starting December 24. So reads the first synopsis:

In “Shazam Slam,” the villainous Black Adam battles Batman on the Rock of Eternity and unleashes a horde of Djinn determined to turn the Earth back to its pre-human, volcanic state. Affected by the otherworldly powers of these primordial monsters, Batman becomes possessed and is turned into a giant flying Batmonster laying waste to the Hall of Justice, with only Superman capable of taking the fight to the Dark Knight. One by one, the Justice League - with the help of Shazam (voiced by Sean Astin) and The Wizard (voiced by Carl Reiner) - must hunt down and defeat each Djinn in order to yet again save the world from destruction.